| 摘要 |
An apparatus for simultaneously transmitting and receiving as well as mixing transmitted and received waves. The transmitted and received waves respectively having perpendicular polarization directions with respect to one another. The apparatus comprises a reflector with an associated primary horn radiator impinging upon the reflector. The primary horn radiator is advantageously flared throughout its length from front to back thereof to provide a tapered hollow space therein. An excitation conductor delivers the waves to be transmitted to the horn radiator. There is provided means for receiving waves captured by the radiator, such receiving means being arranged in the tapered hollow space of the horn radiator and serves to filter out and remove the received waves as well as a portion of the transmitted waves and to mix these filtered out waves. For the purpose of compensating for non-symmetry in the field of the received wave the receiving means is advantageously arranged in offset relationship with respect to the central lengthwise axis of the horn radiator. Such apparatus has typical utilization in electronic distance measuring environments.
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